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High-resilience silicone rubber and preparation method thereof

A silicone rubber, high resilience technology, applied in the field of silicone rubber, can solve the problems of low resilience, low mechanical strength, limitations, etc., and achieve the effect of reducing vulcanization temperature, high mechanical strength, and reducing dosage

Inactive Publication Date: 2019-03-15
东莞市朗晟材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Due to its good aging resistance and stability, silicone rubber has a wide range of applications, and is widely used in mobile phone cases, baby pacifiers, silicone tubes, power coating materials and other products, but the current silicone rubber materials have low resilience , low mechanical strength, can not meet the current market requirements for the performance of silicone rubber, the application is subject to certain restrictions

Method used

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  • High-resilience silicone rubber and preparation method thereof
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  • High-resilience silicone rubber and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] A kind of high resilience silicon rubber, comprises the raw material of following weight part:

[0043]

[0044] The composite silicone rubber is a mixture of methyl vinyl silicone rubber A and methyl vinyl silicone rubber B in a weight ratio of 30:70; wherein, the vinyl content of the methyl vinyl silicone rubber A is 0.20 %, the methyl content is 99.80%, and the molecular weight is 650,000; the vinyl content of the methyl vinyl silicone rubber B is 0.14%, the methyl content is 99.86%, and the molecular weight is 800,000.

[0045] The chemical formulas of the above-mentioned methyl vinyl silicone rubber A and methyl vinyl silicone rubber B are as follows:

[0046]

[0047] Wherein, n=8850, m=20 of the methyl vinyl silicone rubber A; n=11500, m=15 of the methyl vinyl silicone rubber B.

[0048] The reinforcing agent has a specific surface area of ​​140m 2 / g of precipitated silica.

[0049] The silane coupling agent is propyltrimethoxysilane.

[0050] The rele...

Embodiment 2

[0063] A kind of high resilience silicon rubber, comprises the raw material of following weight part:

[0064]

[0065]

[0066] The composite silicone rubber is a mixture of methyl vinyl silicone rubber A and methyl vinyl silicone rubber B in a weight ratio of 50:50; wherein, the vinyl content of the methyl vinyl silicone rubber A is 0.23 %, the methyl content is 99.77%, and the molecular weight is 700,000; the vinyl content of the methyl vinyl silicone rubber B is 0.16%, the methyl content is 99.84%, and the molecular weight is 850,000.

[0067] The chemical formulas of the above-mentioned methyl vinyl silicone rubber A and methyl vinyl silicone rubber B are as follows:

[0068]

[0069] Wherein, n=8800, m=22 of the methyl vinyl silicone rubber A; n=11470, m=18 of the methyl vinyl silicone rubber B.

[0070] The reinforcing agent has a specific surface area of ​​150m 2 / g of precipitated silica.

[0071] The silane coupling agent is vinyltrimethoxysilane.

[007...

Embodiment 3

[0085] A kind of high resilience silicon rubber, comprises the raw material of following weight part:

[0086]

[0087] The composite silicone rubber is a mixture of methyl vinyl silicone rubber A and methyl vinyl silicone rubber B in a weight ratio of 40:60; wherein, the vinyl content of the methyl vinyl silicone rubber A is 0.25 %, the methyl content is 99.75%, and the molecular weight is 750,000; the vinyl content of the methyl vinyl silicone rubber B is 0.18%, the methyl content is 99.82%, and the molecular weight is 900,000.

[0088] The chemical formulas of the above-mentioned methyl vinyl silicone rubber A and methyl vinyl silicone rubber B are as follows:

[0089]

[0090] Wherein, n=8750, m=25 of the methyl vinyl silicone rubber A; n=11450, m=20 of the methyl vinyl silicone rubber B.

[0091] The reinforcing agent has a specific surface area of ​​170m 2 / g of precipitated silica.

[0092] The silane coupling agent is vinyltriethoxysilane.

[0093] The releas...

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Abstract

The invention relates to the technical field of silicone rubber, in particular to high-resilience silicone rubber and a preparation method thereof. The high-resilience silicone rubber comprises raw materials in parts by weight as follows: 90-100 parts of composite silicone rubber, 35-45 parts of a reinforcing agent, 1.5-2.5 parts of hydroxy-terminated polydimethylsiloxane, 0.15-0.25 parts of a silane coupling agent, 5-8 parts of magnesium oxide, 0.1-0.15 parts of a release agent, 0.6-1.0 part of a vulcanizing agent and 0.1-1.0 part of distilled water. By means of the materials such as the reinforcing agent, hydroxy-terminated polydimethylsiloxane, the silane coupling agent and the like, the prepared silicone rubber has high resilience rate and excellent resilience, further has the properties of better tensile strength, elongation at break, tear strength and the like, is high in mechanical strength and stability and has wide application range.

Description

technical field [0001] The invention relates to the technical field of silicone rubber, in particular to a high resilience silicone rubber and a preparation method thereof. Background technique [0002] Due to its good aging resistance and stability, silicone rubber has a wide range of applications, and is widely used in mobile phone cases, baby pacifiers, silicone tubes, power coating materials and other products, but the current silicone rubber materials have low resilience , low mechanical strength, can not meet the current market requirements for the performance of silicone rubber, the application is subject to certain restrictions. Contents of the invention [0003] In order to overcome the shortcomings and deficiencies in the prior art, the object of the present invention is to provide a high resilience silicone rubber with high resilience and better tensile strength, elongation at break, tear strength and other properties. High mechanical strength, high stability, ...

Claims

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Application Information

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IPC IPC(8): C08L83/07C08L83/04C08K3/22C08K3/36C08K5/5425C08K5/5419C08K5/14
CPCC08K2003/222C08L83/04C08L2205/025C08K3/22C08K3/36C08K5/5425C08K5/5419C08K5/14
Inventor 潘鹤斌
Owner 东莞市朗晟材料科技有限公司
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